html {
  color: #222;
  overflow-y: scroll;
  font-family: "微软雅黑", Arial;
  font-size: 16px;
}

body,div,p,h1,h2,h3,h4,h5,h6,ul,ol,li,dl,dt,dd,table,td,tr,th,header,article,footer,section,nav {
  margin: 0;
  padding: 0;
}

h1,h2,h3,h4,h5,h6 {
  font-size: 100%;
  font-weight: 400;
}

ul,ol {
  list-style: none;
}

li {
  list-style-type: none;
}

table,td,tr,th {
  font-size: 100%;
}

b,strong {
  font-weight: 400;
}

i,em {
  font-style: normal;
}

s,del,u,ins {
  text-decoration: none;
}

img {
  vertical-align: middle;
  border: none;
}

a {
  color: #222;
  text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* 公共类 */

.fl {
  float: left;
}

.fr {
  float: right;
}

.al {
  text-align: left;
}

.ac {
  text-align: center;
}

.ar {
  text-align: right;
}

.hide {
    display: none;
}

.clearfix {
    zoom: 1;
}

.clearfix::after {
    content: "";
    display: block;
    height: 0;
    overflow: hidden;
    clear: both;
}
